Thermostat



Nov. 29,1927. I v 15651 ,262

J. F ENELON THERMOSTAT Filed Jan. 2, 1926 2 Sheets-Sheet 1 WITNESSE:

Nov.a29, 1927. 1,651,262

' J. FENELON THERMOSTAT Filed Jan. 2. 1926 2 Shets-Sheet 2 INVENTOR Imimrl jianr'enelow,

*l w W ATTORNEYS w miassss I 'ing'f more. clearly certain details-of thepres- Patented Nov. 29; 1927,

, UNITED TATES PATENT oFFicn;

Juan rnnnromor onxncgmnxrco, assrenon or 'rwnnrwrrvn onn-nunnnnnrns 'rononnn'r wrLson; TEN onnnnnnnnn'rns T0 scones: s. CLARK, AND

HU'ITIIRJED'IFI;S TO DAVID C. BEAN-DON, -ALL OF OAXACA, MEXICO. 1 1 iTEN ONE Appltcation'fl ku. January 2, 1926. Serial No. 79,067. i

,This inventionrelates to thermostats, and

has especial referenceto the class ofdevices used for regulatingtemperature and for controlling, signalingmechanisms, I p J Theprincipal object of the present invention is to provide an improveddevice of the.

indicated character which willbe more then oughly efficientan'defli'ectualfor nearly all purposes for which thermostats;areused,

Another object'of the invention is to pro vide a thermostatcharacterized by adjustibility for rendering the thermostat suscepti bleand operative to various degrees of heat.-

Another object of the present invention is to provide agthermostat whichis especially adapted to be used in conj-unctionwith asig nalingmechanism which will be actuated bythe thermostat, and which: signalingmechanism will be characterized by adjustibility to: render thesignaling mechanism operative and responsive to-the thermostat under itsvariousconditionsof adjustment.

The nature of the invention and its distinguishing features. pear whenthe following. specification is read inconjunction with the accompanyingdrawings, in which:

Figure 1-'s a sectional elevation illustrat-. ing one application of thepresent: invention. Fig. 2 is a'sectio'nal view taken on the 1ine2 -2 ofFig. 1 and lookingin the directionxindicated by the arrows. I f 7 Fig.1?is fragmentary perspective view of thethermostatie means and showing themanner in which it is suspended.

' Fig. 4 is an enlarged sectional view show-.

ent invention.

:Fig. 5 is a detail View takenasubstantially.

ing each of the. wires21 is a coil spring 24.

The present embodiment of the invention as hereinafter described and asillustrated in the drawings isbyway of example only; In the presentinstance, and in accordance,

with the present inventiom-the thermostatic means 10 is. employedconjunction w th a circuit closing means 11 which mayform a and;advantages. will ap- I which part of a signalingcr alarm-mechanism.

The thermostatic means 10 will be. arranged 1n some suitablelocation soas to be susceptible to mounting heat. and, as shown in Fig. 1 of thedrawings, is arranged within a canopy or cupola 12 which may form a partof a structure of a dwelling or shop where certain activities are beingcarried out and wherein the condition of temperature has to known andcontrolled- The thermostat1c. means 10 is suspended from portions of thecanopy or cupola 12 which willconstitute a supporting structure. Thethermostaticmeans comprises a plurality of heat responsive elements 13..Each of the-elements 13 consists of members 'or strips of zinc 14 whichare connected, together, as at 15, at their opposite ends in pairs. andwhich are further connected together, as at 16, substantially centrally,or at a point midway of their ends; one vpairof strips being connected.elements. Each of the elements 13 also includes members or tubes 17 ofsteel or. glass, preferably the latter, which are held in place bymembers 18. The tube 17 oi each el'emen' being, held respectively intubular portions 19,01? the pair of'members 18 employed with portions 20respectively of the members 18 being fastened in any suitable manner,such as by soldering, between the related ends of the strips 14.

v In order to suspend themeans 10 and to permitthe. same to respondproperly to the action of heat there are provided} wires 21. are spacedand are supported; by the walls 22: and 23 of the cup'ola 12. Surround-A pair of flexible elements, such asthe chains 25, employed inconjunction with each of thetubes 17,. and each of the chains 25 hasonejend thereof connected, as at 26,

to thetube HZ-and its opposite end is con- 1 13 is'arrangedbetween thestrips let-by virtue of the opposite'ends of the tube,

y in

sheave .14 of the element 13 adjacent the wall are flexible elements 23;each oi which hasnne end thereof attached to the said strip" and itsopposite end is connected to a weight 3st, and each oi the elements 32}passes over a 35. The sheaves 35' are rotatably supported bet-weenspaced lugs ofa bracrct 36 attached to the wall It should he understoodthat the Zinc strips l ft and gli tubes 17 are of diilerentcoctticicui's or cizpension. It should now be ap parcn t that thethern1o.--:tat ic means described one which very sensitive andresponsive to hcatand thal ex )ansion in the means it) results from theint lvidual expansion of each ot' the elements 13 which is the vitalreason why the means 10 is very sensitive and responsive to heat.Byvirtuc of the tension means cn ployed it is possible to adj ust themeans 10 to be sensitive and responsive to various degrees oftemperature and maybe made adjustable to meet all conditions under whichit will op 28, as at 38. lhesprings are in the nature of pull springserate. Each of the springs thereof attached to the wall as at 37, andits opposite end s attachedto the member and, due to the fact that theyare attached to the wall 22and member28, will cause theproperdistribution of the GlGllllllS 13 when the member 28 is moved inthe adjustment of the thermostatic means 10.

In the present embodiment of the invention the thermostatic means 10isshown in conjunction with a circuitclosing means 40 which may form apart of an alarm mechanism, butobviously the means .10 may be used inconjunction with any other mochanism witlrwhich it will be useful. Themeans l0 includes a contact 41 carried lbya strip of one. of theelements 13 which will inove'incontactwith the end of a screw 42 underthe expansion of the means "10. The screw 4.2 coacts with the threads ofa bore in a fixture 43 of insulating materialwhich is attachedtothc wall22. A beveled pinion 44 is held against longitudinal movement withrespect to thescrew 42 by virtue ofa portion of the fixture 43 and aretaining member 45 attached, as at 46, to the fixture 43. In order toe'fi'ect the rotation of the pinion .44 and, therefore, the longitudinalmovementof the screw 42 thereis provided a device 47 which has a handle48 at one end and a beveled pinion 49 at itsop osite end. A guide 50 isattached to a portion of the :24 has one end cupola 12. One end of thedevice 47, the end havin the pinion 49 thereon, is inserted in the guide50 so as to bring the pinion 49 in meshing relationship with thepinion44.;

13y manipulatingthe handle 48 motion will be transmitted to the screw42to move the same to the desired adjusted position. In this way thedistance between the end ofthe screw 42 and the contact 41 may be variedand thus contact between these parts will occur under various conditionsof expansion of the means 10 to closea circuit. The

circuit is completed, as shown in Fig. 7 of the drawings. The circuitincludesa socket 51, one terminal of which is connectcdby a wire 52 tothe screw 42, as at 53, andthe other terminal of the socket 51isconnected, as at 54, to the wall 22 which has electrical connection tothe means 10 through and by virtue of the other walls of the cupola 12and theconncction 32. A two-terminal plug 55 is employed which iselectrically connected to a source of electrical energy 56 and a signaldevice 57 in the form of a bell.

By bringing the terminals of the plug 55 in contact with the terminalsofthe socket 531 the circuit will be closed through the signal 57 and ifthe means 10 has been expanded a predetermined degree in which thecontact ll will be in engagement with thescrew 4-2 the signal 57 will berendered active and thus I it will be known that there obtains a certaintemperature which maybe a dangerous tomemployed is also adjustabletocompensate for the adjustment made the thermostat so that thesignaling mechanism will be responsive under all renditions of the therelnosl'at. l

It is to beunderstoodfithat the invention is not restricted to theprecise arrangement.

of parts shown and described, as details lof construct-ion may bemodified and parts may be rearranged without departing from the spiritof the invention, the scope ofwhich is hunted only by the terms of the aipended claims. r i i r What I claim is: y a i 1. The combination of acupola, thermostatic means comprisinga plu'ralityof heat responsiveelements connected together; and non-rigid means for expansiblysuspending said heat responsive elements from said cupola. w 2. Thecoinbinationof: a cupola, email)- static means comprisingda pluralityofheat responsive: elements connected together;

means for expansibly suspending said heat responsive elements from saidcupola,'and,

tensioning means forvarying the total degree of lateral motion of saidthermostatic means.

3. In a thermostat, thermostatic means comprising a plurality of heatresponsive ele ments, means for varying the degree of lateral motion ofeach of said elements to vary the total degree of lateral motion of saidthermostatic means, and non-rigid support.-

comprising a plurality of heat responsive elements, means for varyingthe degree of lateral motion of each of said elements to vary the totaldegree of lateral motion of said thermostatic means, and supportingmeans.

for expansibly suspending the thermostatic means, said supportingmeansincluding extensible elements, and flexible members, the

flexible members being connected respective- 1y between portions of theextensible ele.

. ments and the heat responsive elements.

flexible members being connected respectively between. portions of theextensible elements and the heat responsive elements.

6. In a thermostat, thermostatic means comprising a plurality of heatresponsive elements, tensioning means for varying the de gree'of lateralmotion of each of said ele-' ments to vary the total degree of lateralmotion of said. thermostatic means, and sup porting means for expansiblysuspending the thermostatic means, said supporting means includingextensible elements, and flexible members, the flexible members be ngconnected respectively between'portions of the extensible elements andthe heat responsive elements, and said tensioningmeans including pullweights at one side of thethermo static means, and an adjusting deviceoperatively connected to the opposite side of said thermostatic means. a

7. In a thermostat, a pluralityxot heat responsive elements expansiblyconnected tomg means for expansibly suspending the thermostatic means. v

4:. In a thermostat, thermostatic means gether, each of said elementscomprising a pair of zinc strips connected together at their oppositeends,-and a glass member connected to and supported between said zincstrips;

and supporting means connected to said glass members, said supportingmeans serving for rexpanslbly suspending the said elements.

8. In a thermostat, thermostatic means, tensioning means acting on thethermostatic means for varying the degree of lateral motion of thethermostatic means, said tensioning means including pull weights actingon one side of the thermostatic means, and an adjusting deviceoperatively connected to the opposite side of said thermostatic means.

9.'In' a thermostat, thermostatic means,

'tensio'ning means acting on the thermostatic means for varying thedegree of lateral motion of the thermostatic means, said tensioningmeans includingpull weights acting on one side of the thermostaticmeans, an adjusting device operatively connected to the opposite side ofsaid thermostatic means,

said adjusting device comprising supporting wires, a member arranged forsliding movement on said Wires, said thermostatic means connected at oneside to said member, a spring exerting a pull on said member 1n onedirection, and an adjusting element connected to said member formaintaining said member in different adjusted positions. I

. 10..A thermostat comprising a support, thermostatic means, flexiblemeans suspend ingthe thermostatic means from saidsupport, pulleys onsaid support, a' flexible con- .nection' passed over each pulley andconnected at one end to the thermostatic means and its other end havinga weight for exerting a pull on the thermostatic means in one direction,Wires carried by the support, a member arranged on said wires forsliding movement, said thermostatic means' connected to said member atapoint. on said thermostatic means opposite to that at which theaforesaid flexible connections are connected thereto, means constantlyexerting a pull on said member in one direction, and an elementadjustably carried by said support and connected to said member for adjustably maintaining said member "in different adjusted positions tothereby combine with the connected Weightsto vary the degree of lateralmotion of'said thermostatic means.

1 JUAN rnnnnoiv.

